Pietro Bonaventura (died 1653) was a Roman Catholic prelate who served as Bishop of Cesena (1629âÂÂ1653).
On 14 March 1629, Pietro Bonaventura was appointed during the papacy of Pope Urban VIII as Bishop of Cesena. On 17 April 1629, he was consecrated bishop by Antonio Marcello Barberini, Cardinal-Priest of Sant'Onofrio, serving as co-consecrators. He served as Bishop of Cesena until his death on 23 July 1653.